[PATCH 1/2] arm64: dts: extent bus-ranges of PCIe for rk3399
heiko at sntech.de
Tue May 23 01:44:32 PDT 2017
Am Dienstag, 23. Mai 2017, 10:42:27 CEST schrieb Heiko Stuebner:
> Am Montag, 22. Mai 2017, 09:20:59 CEST schrieb Shawn Lin:
> > Hi Heiko,
> > 在 2017/5/19 19:53, Heiko Stuebner 写道:
> > > Hi Shawn,
> > >
> > > Am Dienstag, 16. Mai 2017, 14:30:40 CEST schrieb Shawn Lin:
> > >> In order to support multiple hierarchy of PCIe buses,
> > >> for instance, PCIe switch, we need to extent bus-ranges
> > >> to as max as possible. We have 32 regions and could support
> > >> up to 31 buses except bus 0 for our root bridge.
> > >>
> > >> Signed-off-by: Shawn Lin <shawn.lin at rock-chips.com>
> > >
> > > can these 2 patches really be independent?
> > yes, they are sloving two different issues, so I think
> > they could be applied as-is.
> > For patch 1, we was trying to ask PCI core to scan more
> > buses as possible, otherwise it now only scan one, which
> > isn't enough for PCIe switch chip.
> > And before patch 2, we only allocated limited regions for
> > devices attached to our root bridge, so we will fail to enable
> > some devices if they ask more memory resource.
> ok, applied both for 4.13
just saw, that you may want to remember to include more people
in devicetree patches ... especially the linux-arm-kernel at lists.infradead.org
list. Doesn't hinder this patchset, but worth remembering for future series.
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